Shuttle tuning device



B. w. BROWN 2,240,636

SHUTTLE TUNING DEVICE Filed Feb. 14, 1940 Patented May 6, 1941 2,240,636 7 SHUTTLE TUNING DEVI-CE Hapeville, Ga., assignor of one-half to Ray S. Leonard, Atlanta, Ga.

Application February 14, 1940, Serial No. 318,941

Benjamin W. Brown,

7 Claims.

The invention relates to a shuttle tuning device and it is an object of the same to provide means whereby a shuttle binder or a shuttle check may be adjusted without stopping the loom. As is well known, in connection with the starting of a new loom many adjustments must be made in the so-called tuning of the loom, while relatively few adjustments need to be made thereafter. Because of variations in the humidity of the weave loom and for other reasons it becomes necessary quite frequently to adjust the shuttle check or binder so as to vary the pressure on the shuttle, either to prevent rebound or to insure that the shuttle will get fully home. Even slight variations in the proper position of the shuttle, due to rebounding under unduly dry conditions or due to failure to get home caused: by dampness, or for other reasons, are undesirable since such slight variations may interfere with the operation of the transfer mechanism and cause rejects or false transfers. In all cases with which I am familiar it is necessary to stop the loom in order to adjust a shuttle check or binder for varying its effect on the shuttle, but with my tuning device variations in the shuttle position can be controlled without stopping the loom.

A further object of the invention is to provide shuttle tuning means which can be applied to looms now in use in a simple manner and in a short time, so that the device can be added to almost any loom without the employment of skilled labor.

Another object of the invention is to provide a shuttle tuning device which shall have a wide range of adjustment and which shall stay safely in place after adjustment thereof.

Another object of the invention is to provide means for adjusting shuttle checks and binders without the use of tools, thus reducing the danger of getting dirt or oil on the warp and the cloth in the loom.

Referring to the drawing which is made a part of this application and in which similar reference characters indicate similar parts:

Fig. 1 is a plan of a shuttle box provided with tuning means according to one form of my invention,

Fig. 2, a section on line 2--2 of Fig. 1, looking toward the right,

Fig. 3, a side elevation of the device shown in Fig. 1,

Fig. 4, a plan similar to Fig. 1, showing another form of my invention, and

Fig. 5, a detail of parts shown inFig. 4.

In the drawing reference character l0 indicates a portion of the lay of the loom provided at H with a shuttle box of any desirable or conventional character and a shuttle is indicated at I! as being in the shuttle box. A shuttle binder I3 is shown as pivoted at H but it is to be understood that this binder is merely a binder of conventional character and that my invention may be used with practically any of the many types of binders known in the art.

In Fig. 1 a leaf spring is shown at I5 as bein mounted on the lay and secured thereto by means such as a bolt l6 extending into or through the lay and provided it in place, the spring in this instance being confined between the nut l1 and the lay and being further secured in position by means of a bolt [8 also extending into or through the lay and having a nut at IQ for holding the bolt in place and for clamping the spring between itself and the lay. At its other end the spring may be attached to the binder 13 by means of a screw l9 which serves to keep the binder in place in case of breakage of the heel pin M or other parts.

- Ihis screw may be omitted if desired.

For adjusting the action of the spring I5 on the binder I provide a lever 20 through which both of the bolts 16 and I8 pass, this lever being held on the bolt l6 by means of a cotter pin 2| and being held on the bolt l8 by means of a butterfly nut 22. A coil spring 23, located between nut l9 and lever 20, holds the lever against nut 22 and helps to prevent chattering as the shuttle moves the binder when entering the box.

In order to insure that the nut 22 will remain in adjusted position it is provided at its underside with tapered portions indicated at 25 in Fig. 2 and the lever 20 is provided with radially extending notches at 26 in suitable number as shown in Fig. 3, so that in any position of adjustment the tapered portions 25 of the nut may engage a pair of alined notches 26 and thus hold the nut against accidental rotation.

In the form of the invention shown in Fig. 4 the parts In to I 4 and I6 to 23 may be identical with those above described and similar means may be used for preventing accidental rotation of nut 22. The spring 26' is however bowed to a much greater extent than is the spring l5 and isv located, with respect to bolt l6, between the nut IT and adjusting means comprising a pair of; collars 21, 28 so that it is free to move relatively to said bolt. In like manner, with respect to bolt I 8, the spring 26' is free to move and is normally forced outward to the limit of its movewith a jam nut l1 for holding ment by the spring 23, or into the position shown in Fig. 4, the spring 28' also moving lever 20 into the position shown-in Fig. 4. Thus the spring 26' is free to bend throughout practically its entire length, so as to offer a more yielding resistance to the movement of the shuttle, yet such as can be readily and accurately adjusted to determine the position of rest of the shuttle, all without stopping the loom or in any way interfering with its operation.

The lever 2! can be adjusted by nut 22, as above stated, and can be held against rotation by teeth 25 engaging notches 26. But, since the right hand end of the spring 26' can floaton bolt (6 and cause unequal adjustment of, the spring it is deemed desirable to provide collars '27 and 28 for making sure and easy adjustment in the tension of the spring without danger of improper adjustment. These collars are provided with teeth 29, 3B of varying height arranged in step-like fashion in any desired sequence and arrangemerit and when the oollars'are turned relatively to one another the teeth will insure that the proper adjustment is maintained,

'It' Wiil be obvious to those skilled in the art that the device above described may be varied in many details all without departing from the spirit of the invention; therefore I do not-limit myself to what is shown in the drawing and described in the specification, but' oniy as required by the state of the prior art. a

Having thus fully described my invention What lclaimist 1. In a loom, a-lay, a shuttle box on the lay, a binder for said box, a leaf spring hearing at one end on the binder, a pair ofbolts spaced lengthwise of the layand extending through said leaf spring; a lever mounted on said bolts and contacting at one end with an intermediateportion of said spring, and means on the bolt nearest the shuttle box for moving said lever-to vary the actienoi the spring-on thebinder.

' against the lay, said lever being mounted on said bolts for floating movement relatively thereto.

5. In a loom, a lay, a shuttle box on the lay, a shuttle binder for said box, a leaf spring for applying pressure to the shuttle binder, bolts spaced lengthwise of the lay and passing through apertures in the spring, a lever mounted on said bolts and engaging an intermediate portion of said spring, means for holding said lever and spring on said bolts, said means including an adjustable nut on the bolt nearest the shuttle boxbearing on :said lever for varying the action of said spring, and resilient means for holding said spring and said lever in raised position with relation to said nut.

6. In a loom, a lay, a shuttle box on the lay, a binder-for said box, a leaf spring hearing at one end -of, the binder, apair of bolts spaced lengthwise of the lay andextending through said leaf spring, a lever movably mounted on said bolts,

said lever engaging the ,leaf spring between said bolts and said binder, .means on the bolt nearest the shuttlebox providing a fulcrum'for said lever,

and means on the other oneof said pair of bolts for movingvsaid lever on its fulcrum.v

7., A device as in claim 6, said means including -?a". pair of collars .with oppositely-arranged steplike means on their adjacent faces.

BENJAMIN W. BROWN. 

